/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/**
 * @author Vladimir N. Molotkov, Stepan M. Mishura
 */

package org.apache.harmony.security.asn1;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

/**
 * This class represents ASN.1 Sequence OF type.
 * 
 * @see http://asn1.elibel.tm.fr/en/standards/index.htm
 */

public class ASN1SequenceOf extends ASN1ValueCollection {

	/**
	 * Creates array wrapper of provided ASN1 type
	 * 
	 * @param type
	 *            - ASN1 type to be wrapped
	 * @return - a wrapper for ASN1 set of type.
	 * @throws IOException
	 * @see org.apache.harmony.security.asn1.ASN1ValueCollection
	 */
	public static ASN1SequenceOf asArrayOf(ASN1Type type) {

		return new ASN1SequenceOf(type) {
			@Override
			public Object getDecodedObject(BerInputStream in)
					throws IOException {
				return ((List<?>) in.content).toArray();
			}

			@Override
			public Collection<Object> getValues(Object object) {
				return Arrays.asList((Object[]) object);
			}
		};
	}

	//
	//
	// Decode
	//
	//

	public ASN1SequenceOf(ASN1Type type) {
		super(TAG_SEQUENCE, type);
	}

	//
	//
	// Encode
	//
	//

	@Override
	public Object decode(BerInputStream in) throws IOException {
		in.readSequenceOf(this);

		if (in.isVerify) {
			return null;
		}
		return getDecodedObject(in);
	}

	@Override
	public final void encodeContent(BerOutputStream out) {
		out.encodeSequenceOf(this);
	}

	@Override
	public final void setEncodingContent(BerOutputStream out) {
		out.getSequenceOfLength(this);
	}
}
